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Finding the Fourth Proportional to 2,393.91, 3,303.97 and 1,399.77

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Solution

The fourth proportional to 2,393.91, 3,303.97 and 1,399.77 is: 1,931.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,393.91 : 3,303.97 = 1,399.77 : x
  2. Step 2: Convert to fraction form
    2,393.91/3,303.97 = 1,399.77/x
  3. Step 3: Cross multiply
    2,393.91x = 3,303.97 × 1,399.77
  4. Step 4: Simplify right side
    2,393.91x = 4,624,794.59
  5. Step 5: Solve for x
    x = 4,624,794.59/2,393.91
  6. Step 6: Final answer
    x = 1,931.90

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.